Degradation of aflatoxin B1 in peanut meal by electron beam irradiation

The effects and safety of electron beam irradiation (EBI) treatment on the detoxification of aflatoxin B-1 (AFB(1)) in the peanut meal were evaluated in this article. The AFB(1) degradation was predominantly affected by both initial AFB(1) and water concentrations. The degradation of AFB(1) in the selected concentrations (0.5-5ppm) was proven to follow pseudo first-order reaction kinetics (R-2>0.95). The AFB(1) degradation was faster when the initial concentration was 5ppm and the moisture content was 21.47%, in comparison with the initial concentration of 1ppm and 0.5ppm and the moisture content of 14.32% and 8.74%, respectively. The Ames and cytotoxicity tests were employed to evaluate the residual toxicity of EBI-treated peanut meal. The mutagenic activity of EB-treated samples was completely lost compared with that of untreated samples and the degradation products in peanut meal has almost no cell toxicity.